How many movies have Saki Hatsumi and Usubashisui collaborated on?

They have worked on 1 movie together! Their first movie together was Exhibitionist Pleasure － Busty Young Wife Indulges In Humiliation ＆ Cruelty (2015) and was their highest rated movie together. They have not worked together since Exhibitionist Pleasure － Busty Young Wife Indulges In Humiliation ＆ Cruelty (2015).